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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.client;
import com.google.inject.Inject;
import com.yahoo.jdisc.application.AbstractApplication;
import com.yahoo.jdisc.application.BundleInstaller;
import com.yahoo.jdisc.application.ContainerActivator;
import com.yahoo.jdisc.service.CurrentContainer;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* <p>This is a convenient parent class for {@link ClientApplication} developers. It extends {@link AbstractApplication}
* and implements {@link Runnable} to wait for {@link #shutdown()} to be called. When using this class, you implement
* {@link #start()} (and optionally {@link #stop()}), and provide a reference to it to whatever component is responsible
* for signaling shutdown.</p>
*
* @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
*/
public abstract class AbstractClientApplication extends AbstractApplication implements ClientApplication {
private final CountDownLatch done = new CountDownLatch(1);
@Inject
public AbstractClientApplication(BundleInstaller bundleInstaller, ContainerActivator activator,
CurrentContainer container) {
super(bundleInstaller, activator, container);
}
@Override
public final void run() {
try {
done.await();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
public final void shutdown() {
done.countDown();
}
public final boolean isShutdown() {
return done.getCount() == 0;
}
public final boolean awaitShutdown(int timeout, TimeUnit unit) throws InterruptedException {
return done.await(timeout, unit);
}
public final void awaitShutdown() throws InterruptedException {
done.await();
}
}
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